That seems pretty comprehensive as far as the current state of.play is on Lemmy as you can’t follow individuals on here as you can in Mastodon (as that’s kind of it’s thing) or on Reddit. I suspect this should be in the pipeline as it clearly works from Mastodon to Lemmy so the underlying structure is there. It may be they didn’t initially implement it because it could make feeds… messy or they just had better things to do with their time as there is a lot to get done.